Detailed description

STSPIN840

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DocID031835 Rev 1

The choice of sense resistors value must be take into account two main issues:



The sensing resistor dissipates energy and provides dangerous negative voltages on

the SENSE pins during the current recirculation. For this reason the resistance of this

component should be kept low (using multiple resistors in parallel will help obtaining

the required power rating with standard resistors).



The lower is the RSENSE value, the higher is the peak current error due to noise on

RSENSE must be avoided.

Figure 6. PWM current control sequence example

Note:

When the voltage on the SNSx pin exceeds the absolute ratings, a fault condition is

triggered and the respective ENx\FAULTx output is forced low.